<!DOCTYPE html>
<html>

<head>
    <title>掘金（juejin.cn）</title>
    <meta charset="utf-8">
    <style>
        /* 主区块居中 */
        .main {

            margin: auto;
            padding: 0px;
            color: rgb(17, 17, 17);
            text-align: center
        }

        /* 头部区块 1 */
        .header1 {
            background-color: rgb(255, 255, 255);
            color: rgb(24, 24, 24);
            height: 65px;
            display: -webkit-flex;
            display: flex;
            -webkit-justify-content: center;
            justify-content: center;
        }

        /* 头部区块 1 内部 */
        .header1-inner {
            background-color: rgb(255, 255, 255);
            color: rgb(24, 24, 24);
            width: 950px;
            height: 75px;
            display: -webkit-flex;
            display: flex;
            -webkit-justify-content: space-between;
            justify-content: space-between;
            -webkit-align-items: center;
            align-items: center;
        }

        /* 头部区块 2 */
        .header2 {
            background-color: rgb(255, 255, 255);
            color: rgb(24, 24, 24);
            text-align: center;
            height: 40px;
            display: -webkit-flex;
            display: flex;
            -webkit-justify-content: center;
            justify-content: center;
        }

        /* 头部区块 2 内部 */
        .header2-inner {
            background-color: rgb(255, 255, 255);
            color: rgb(24, 24, 24);
            width: 950px;
            height: 40px;
            display: -webkit-flex;
            display: inline-flex;
            -webkit-justify-content: flex-start;
            justify-content: flex-start;
            -webkit-align-items: center;
            align-items: center;
        }

        p.no1 {
            margin-left: 23px;
        }

        .content {
            background-color: #f4f5f5;
            width: 950px;
            margin-top: 15px;
            display: -webkit-flex;
            display: flex;
            -webkit-justify-content: space-between;
            justify-content: space-between;
            display: inline-flex;
        }

        .content-left {
            background-color: rgb(255, 255, 255);
            color: rgb(24, 24, 24);
            width: 690px;
        }

        .content-right {
            background-color: #f4f5f5;
            color: rgb(24, 24, 24);
            width: 240px;
            height: 1000px;
            -webkit-justify-content: flex-start;
            justify-content: flex-start;
        }
        .block1 {
            background-color: rgb(255, 255, 255);
            color: rgb(24, 24, 24);
            width: 240px;
            height: 300px;
        }

        .block2 {
            background-color: rgb(255, 255, 255);
            color: rgb(24, 24, 24);
            width: 240px;
            height: 80px;
        }
        .block3 {
            background-color: rgb(255, 255, 255);
            color: rgb(24, 24, 24);
            width: 240px;
            height: 200px;
        }

    </style>
</head>

<body bgcolor="f4f5f5">
    <div class="main">
        <div class="header1">
            <div class="header1-inner">
                <div>
                    <P>掘金</P>
                </div>
                <div>
                    <P>首页</P>
                </div>
                <div>
                    <P>沸点</P>
                </div>
                <div>
                    <P>小册</P>
                </div>
                <div>
                    <P>活动</P>
                </div>
                <div>
                    <P>2020创作者榜单</P>
                </div>
                <div><input type="text" placeholder=探索掘金 size="20"></input></div>
                <div>
                    <P>写文章</P>
                </div>
                <div>
                    <P>登录</P>
                </div>
            </div>
        </div>

        <div class="header2">
            <div class="header2-inner">
                <div>
                    <P>推荐</P>
                </div>
                <div>
                    <P class="no1">后端</P>
                </div>
                <div>
                    <P class="no1">前端</P>
                </div>
                <div>
                    <P class="no1">Android</P>
                </div>
                <div>
                    <P class="no1">iOS</P>
                </div>
                <div>
                    <P class="no1">人工智能</P>
                </div>
                <div>
                    <P class="no1">代码人生</P>
                </div>
                <div>
                    <P class="no1">阅读</P>
                </div>
            </div>
        </div>
        <div class="content">
            <div class="content-left">
                <table cellpadding="10">
                    <th>热门</th>
                    <th>最新</th>
                    <th>热榜</th>
                </table>
                <table frame="above" cellpadding="5">
                    <tr>
                        <td>
                            sss
                        </td>
                        <td>
                            ss
                        </td>
                        <td>
                            s
                        </td>
                        <td>
                            s
                        </td>
                    </tr>
                    <tr>
                        <td>
                            sss
                        </td>
                    </tr>
                    <td>
                        sss
                    </td>
                    <td>
                        ss
                    </td>
                    <td>
                        s
                    </td>
                    </tr>
                </table>
                </table>
                <table frame="above" cellpadding="5">
                    <tr>
                        <td>
                            sss
                        </td>
                        <td>
                            ss
                        </td>
                        <td>
                            s
                        </td>
                        <td>
                            s
                        </td>
                    </tr>
                    <tr>
                        <td>
                            sss
                        </td>
                    </tr>
                    <td>
                        sss
                    </td>
                    <td>
                        ss
                    </td>
                    <td>
                        s
                    </td>
                    </tr>
                </table>
            </div>
            <div class="content-right">
                <div class="block1"></div>
                <br>
                <div class="block2"></div>
                <br>
                <div class="block1"></div>
                <br>
                <div class="block3"></div>

            </div>
        </div>
        <div>
</body>

</html>